iRhythm Ownership | Who Owns iRhythm?

Overview Forecast RevenueFinancials Chart Transcripts

iRhythm Ownership Summary

iRhythm is owned by 77.52% institutional investors, 0.87% insiders, and 21.61% retail investors. Tudor investment corp et al is the largest institutional shareholder, holding 63.31% of IRTC shares. Sands Capital Global Growth Equity is the top mutual fund, with 4.68% of its assets in iRhythm shares.

IRTC Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	iRhythm	77.52%	0.87%	21.61%
Sector	Healthcare Stocks	232.86%	10.65%	-143.51%
Industry	Medical Device Stocks	37.83%	10.48%	51.69%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Tudor investment corp et al	20.00M	63.31%	$27.45M
Vanguard group	3.31M	10.29%	$587.42M
Blackrock funding, inc. /de	2.81M	8.75%	$499.31M
Artisan partners limited partnership	2.57M	8.13%	$441.59M
Blackrock	2.50M	8.03%	$269.35M
Capital research global investors	1.18M	3.68%	$210.22M
State street	847.88K	2.68%	$145.83M
Geode capital management	858.40K	2.67%	$152.34M
Ubs asset management americas	829.86K	2.58%	$147.25M
Jpmorgan chase	758.59K	2.36%	$134.60M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
First light asset management	155.10K	2.51%	$26.68M
Next century growth investors	189.08K	2.37%	$32.52M
Rock springs capital management lp	235.00K	2.36%	$40.42M
Ophir asset management pty	101.56K	2.16%	$17.47M
Kampmann melissa s.	22.01K	2.08%	$2.60M
Healthinvest partners ab	22.32K	2.02%	$6.26M
Eventide asset management	691.51K	1.96%	$118.92M
Williamson legacy group	12.35K	1.71%	$2.19M
Braidwell lp	225.84K	1.15%	$38.84M
Stephens investment management group	561.53K	0.91%	$66.27M

Top Buyers

Holder	Shares	% Assets	Change
Tudor investment corp et al	20.00M	0.05%	20.00M
Millennium management	399.75K	0.02%	339.53K
Polar capital	335.91K	0.28%	334.56K
Jpmorgan chase	758.59K	0.01%	319.15K
Price t rowe associates inc /md/	339.64K	0.01%	313.39K

Top Sellers

Holder	Shares	% Assets	Change
Sands capital management	-	-	-1.70M
Fiera capital	-	-	-381.64K
Champlain investment partners	-	-	-365.63K
Slate path capital lp	-	-	-365.40K
Alyeska investment group	-	-	-351.75K

New Positions

Holder	Shares	% Assets	Change	Value
Tudor investment corp et al	20.00M	0.05%	20.00M	$27.45M
Vanguard fiduciary trust	223.70K	0.01%	223.70K	$26.40M
Jain global	131.09K	0.11%	131.09K	$22.55M
Perceptive advisors	123.00K	0.61%	123.00K	$21.15M
Thrivent financial for lutherans	75.16K	0.02%	75.16K	$8.87M

Sold Out

Holder	Change
Coppell advisory solutions	-1.00
Wealthspire advisors	-1.00
National bank of canada /fi/	-1.00
Concord wealth partners	-1.00
Dunhill financial	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	278	-20.11%	24,936,629	-28.15%	77	0.64%	122	-29.07%	98	-14.04%
Sep 30, 2025	333	5.38%	54,680,163	54.50%	169	1.35%	164	-2.38%	112	19.15%
Jun 30, 2025	316	18.35%	35,390,802	-1.62%	112	0.86%	169	26.12%	93	9.41%
Mar 31, 2025	8	-96.69%	1,629,968	-95.25%	5	0.04%	4	-96.43%	4	-95.35%
Dec 31, 2024	147	-44.11%	24,053,140	-29.85%	76	0.64%	71	-47.79%	51	-23.88%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Sands Capital Global Growth Equity	1.51M	4.68%	-488.05K
Vanguard US Total Market Shares ETF	1.01M	3.21%	68.62K
Canada Life US Small-Mid Cap Growth A	1.00M	3.19%	-41.02K
Vanguard Total Stock Mkt Idx Inv	1.03M	3.18%	12.19K
Vanguard Small Cap Index	744.36K	2.30%	12.22K
iShares Russell 2000 ETF	748.85K	2.28%	6.30K
Capital Group New Economy Comp	625.22K	1.93%	-
American Funds New Economy A	625.22K	1.93%	-
Fidelity Select Medical Tech and Devcs	485.00K	1.48%	117.00K
Eventide Gilead N	464.25K	1.44%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 04, 2026	Lawrence Brian Lee	Chief Technology Officer	Sell	$122.49K
Mar 16, 2026	Smith Mervin	EVP Strategic Business Ops	Sell	$295.47K
Mar 02, 2026	Turakhia Minang	CHIEF MED/SCI OFCR EVP ADVTECH	Sell	$168.26K
Mar 02, 2026	Turakhia Minang	CHIEF MED/SCI OFCR EVP ADVTECH	Sell	$191.00K
Mar 02, 2026	Turakhia Minang	CHIEF MED/SCI OFCR EVP ADVTECH	Sell	$158.00K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	1
2026 Q1	-	37
2025 Q4	-	10
2025 Q3	-	17
2025 Q2	-	8

IRTC Ownership FAQ

Who Owns iRhythm?

iRhythm shareholders are primarily institutional investors at 77.52%, followed by 0.87% insiders and 21.61% retail investors. The average institutional ownership in iRhythm's industry, Medical Device Stocks, is 37.83%, which iRhythm exceeds.

Who owns the most shares of iRhythm?

iRhythm’s largest shareholders are Tudor investment corp et al (20M shares, 63.31%), Vanguard group (3.31M shares, 10.29%), and Blackrock funding, inc. /de (2.81M shares, 8.75%). Together, they hold 82.35% of iRhythm’s total shares outstanding.

Does Blackrock own iRhythm?

Yes, BlackRock owns 8.03% of iRhythm, totaling 2.5M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 269.35M$. In the last quarter, BlackRock increased its holdings by 61.23K shares, a 2.51% change.

Who is iRhythm’s biggest shareholder by percentage of total assets invested?

First light asset management is iRhythm’s biggest shareholder by percentage of total assets invested, with 2.51% of its assets in 155.1K iRhythm shares, valued at 26.68M$.

Who is the top mutual fund holder of iRhythm shares?

Sands Capital Global Growth Equity is the top mutual fund holder of iRhythm shares, with 4.68% of its total shares outstanding invested in 1.51M iRhythm shares.

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